Definition: Disk Drive Controller


The hard disk drive controller electronics which include the disk controller and the interface controller. (See also disk controller and interface controller.)




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Data Recovery Fact

Rotational Latency

The amount of delay in obtaining information from a disk due to the rotation of the disk. For a disk rotating at 5200 RPM, the average rotational latency is 5.8 milliseconds. See also Mechanical Latency.

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